<template>
    <div>
        <h1>这里是评论组件的区域</h1>
        <textarea class="box" placeholder="1234134134134134134134">4213413413413</textarea>
    </div>
</template> 
<script>

</script>   
<style lang="less" scoped>
    .box{
        border:2px dotted red;
        box-sizing:border-box;
        height:300px;
    }
</style>